What is the function of terminal broadcasting?

It is a regular broadcast content based on the airport operation process, such as regular publicity, normal tips for inbound and outbound flights, etc.

After arriving at the terminal, I listened to the radio and waited for boarding. After successful ticket purchase, passengers can go to the airport for check-in and baggage check-in two hours before the plane takes off, then accept the security check of airport staff through the safe passage and finally arrive at the terminal. Arrive at the boarding gate in the terminal building according to the airport TV display screen and check-in boarding pass, and board the plane on time at the registration time notified by the airport broadcast.